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Finding the Fourth Proportional to 420,595.64, 629,887.78 and 242,562.90

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Solution

The fourth proportional to 420,595.64, 629,887.78 and 242,562.90 is: 363,264.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,595.64 : 629,887.78 = 242,562.90 : x
  2. Step 2: Convert to fraction form
    420,595.64/629,887.78 = 242,562.90/x
  3. Step 3: Cross multiply
    420,595.64x = 629,887.78 × 242,562.90
  4. Step 4: Simplify right side
    420,595.64x = 152,787,408,915.55
  5. Step 5: Solve for x
    x = 152,787,408,915.55/420,595.64
  6. Step 6: Final answer
    x = 363,264.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.